Some American universities are starting to research the link with grain-free diets. It is postulated that the uptake of taurine may be impaired in some grain-free diets, especially the ones containing lentils and peas. It’s not simply about supplementing diets with taurine, an essential amino acid, but why the body is not absorbing or metabolizing it. Choose carefully what you feed your dog and prioritize what is safe, nutritious, and affordable.